From 7ccff2cf3d4f7a96be2cf890093798067951fd2e Mon Sep 17 00:00:00 2001
From: Jacky Zhao <j.zhao2k19@gmail.com>
Date: Thu, 14 Jul 2022 18:49:47 +0000
Subject: [PATCH] fix: styling on page-list for smaller screens
---
assets/js/graph.js | 485 +++++++++++++++++++++++++++++------------------------
1 files changed, 267 insertions(+), 218 deletions(-)
diff --git a/assets/js/graph.js b/assets/js/graph.js
index d7e8534..174d494 100644
--- a/assets/js/graph.js
+++ b/assets/js/graph.js
@@ -1,221 +1,270 @@
-async function drawGraph(url, baseUrl, pathColors, depth, enableDrag, enableLegend, enableZoom) {
- const { index, links, content } = await fetchData
- const curPage = url.replace(baseUrl, "")
-
- const parseIdsFromLinks = (links) => [...(new Set(links.flatMap(link => ([link.source, link.target]))))]
-
- const neighbours = new Set()
- const wl = [curPage || "/", "__SENTINEL"]
- if (depth >= 0) {
- while (depth >= 0 && wl.length > 0) {
- // compute neighbours
- const cur = wl.shift()
- if (cur === "__SENTINEL") {
- depth--
- wl.push("__SENTINEL")
- } else {
- neighbours.add(cur)
- const outgoing = index.links[cur] || []
- const incoming = index.backlinks[cur] || []
- wl.push(...outgoing.map(l => l.target), ...incoming.map(l => l.source))
- }
+async function drawGraph(baseUrl, isHome, pathColors, graphConfig) {
+
+ let {
+ depth,
+ enableDrag,
+ enableLegend,
+ enableZoom,
+ opacityScale,
+ scale,
+ repelForce,
+ fontSize} = graphConfig;
+
+ const container = document.getElementById("graph-container")
+ const { index, links, content } = await fetchData
+
+ // Use .pathname to remove hashes / searchParams / text fragments
+ const cleanUrl = window.location.origin + window.location.pathname
+
+ const curPage = cleanUrl.replace(/\/$/g, "").replace(baseUrl, "")
+
+ const parseIdsFromLinks = (links) => [
+ ...new Set(links.flatMap((link) => [link.source, link.target])),
+ ]
+
+ // Links is mutated by d3. We want to use links later on, so we make a copy and pass that one to d3
+ // Note: shallow cloning does not work because it copies over references from the original array
+ const copyLinks = JSON.parse(JSON.stringify(links))
+
+ const neighbours = new Set()
+ const wl = [curPage || "/", "__SENTINEL"]
+ if (depth >= 0) {
+ while (depth >= 0 && wl.length > 0) {
+ // compute neighbours
+ const cur = wl.shift()
+ if (cur === "__SENTINEL") {
+ depth--
+ wl.push("__SENTINEL")
+ } else {
+ neighbours.add(cur)
+ const outgoing = index.links[cur] || []
+ const incoming = index.backlinks[cur] || []
+ wl.push(...outgoing.map((l) => l.target), ...incoming.map((l) => l.source))
}
- } else {
- parseIdsFromLinks(links).forEach(id => neighbours.add(id))
}
-
- const data = {
- nodes: [...neighbours].map(id => ({id})),
- links: links.filter(l => neighbours.has(l.source) && neighbours.has(l.target)),
- }
-
- const color = (d) => {
- if (d.id === curPage || (d.id === "/" && curPage === "")) {
- return "var(--g-node-active)"
- }
-
- for (const pathColor of pathColors) {
- const path = Object.keys(pathColor)[0]
- const colour = pathColor[path]
- if (d.id.startsWith(path)) {
- return colour
- }
- }
-
- return "var(--g-node)"
- }
-
- const drag = simulation => {
- function dragstarted(event, d) {
- if (!event.active) simulation.alphaTarget(1).restart();
- d.fx = d.x;
- d.fy = d.y;
- }
-
- function dragged(event,d) {
- d.fx = event.x;
- d.fy = event.y;
- }
-
- function dragended(event,d) {
- if (!event.active) simulation.alphaTarget(0);
- d.fx = null;
- d.fy = null;
- }
-
- const noop = () => {}
- return d3.drag()
- .on("start", enableDrag ? dragstarted : noop)
- .on("drag", enableDrag ? dragged : noop)
- .on("end", enableDrag ? dragended : noop);
- }
-
- const height = 250
- const width = document.getElementById("graph-container").offsetWidth
-
- const simulation = d3.forceSimulation(data.nodes)
- .force("charge", d3.forceManyBody().strength(-30))
- .force("link", d3.forceLink(data.links).id(d => d.id))
- .force("center", d3.forceCenter());
-
- const svg = d3.select('#graph-container')
- .append('svg')
- .attr('width', width)
- .attr('height', height)
- .attr("viewBox", [-width / 2, -height / 2, width, height]);
-
- if (enableLegend) {
- const legend = [
- {"Current": "var(--g-node-active)"},
- {"Note": "var(--g-node)"},
- ...pathColors
- ]
- legend.forEach((legendEntry, i) => {
- const key = Object.keys(legendEntry)[0]
- const colour = legendEntry[key]
- svg.append("circle").attr("cx", -width/2 + 20).attr("cy", height/2 - 30 * (i+1)).attr("r", 6).style("fill", colour)
- svg.append("text").attr("x", -width/2 + 40).attr("y", height/2 - 30 * (i+1)).text(key).style("font-size", "15px").attr("alignment-baseline","middle")
- })
- }
-
- // draw links between nodes
- const link = svg.append("g")
- .selectAll("line")
- .data(data.links)
- .join("line")
- .attr("class", "link")
- .attr("stroke", "var(--g-link)")
- .attr("stroke-width", 2)
- .attr("data-source", d => d.source.id)
- .attr("data-target", d => d.target.id)
-
- // svg groups
- const graphNode = svg.append("g")
- .selectAll("g")
- .data(data.nodes)
- .enter().append("g")
-
- // draw individual nodes
- const node = graphNode.append("circle")
- .attr("class", "node")
- .attr("id", (d) => d.id)
- .attr("r", (d) => {
- const numOut = index.links[d.id]?.length || 0
- const numIn = index.backlinks[d.id]?.length || 0
- return 3 + (numOut + numIn) / 4
- })
- .attr("fill", color)
- .style("cursor", "pointer")
- .on("click", (_, d) => {
- window.location.href = baseUrl + '/' + decodeURI(d.id).replace(/\s+/g, '-')
- })
- .on("mouseover", function (_, d) {
- d3.selectAll(".node")
- .transition()
- .duration(100)
- .attr("fill", "var(--g-node-inactive)")
-
- const neighbours = parseIdsFromLinks([...(index.links[d.id] || []), ...(index.backlinks[d.id] || [])])
- const neighbourNodes = d3.selectAll(".node").filter(d => neighbours.includes(d.id))
- const currentId = d.id
- const linkNodes = d3.selectAll(".link").filter(d => d.source.id === currentId || d.target.id === currentId)
-
- // highlight neighbour nodes
- neighbourNodes
- .transition()
- .duration(200)
- .attr("fill", color)
-
- // highlight links
- linkNodes
- .transition()
- .duration(200)
- .attr("stroke", "var(--g-link-active)")
-
- // show text for self
- d3.select(this.parentNode)
- .select("text")
- .raise()
- .transition()
- .duration(200)
- .style("opacity", 1)
- }).on("mouseleave", function (_,d) {
- d3.selectAll(".node")
- .transition()
- .duration(200)
- .attr("fill", color)
-
- const currentId = d.id
- const linkNodes = d3.selectAll(".link").filter(d => d.source.id === currentId || d.target.id === currentId)
-
- linkNodes
- .transition()
- .duration(200)
- .attr("stroke", "var(--g-link)")
-
- d3.select(this.parentNode)
- .select("text")
- .transition()
- .duration(200)
- .style("opacity", 0)
- })
- .call(drag(simulation));
-
- // draw labels
- const labels = graphNode.append("text")
- .attr("dx", 12)
- .attr("dy", ".35em")
- .text((d) => content[decodeURI(d.id).replace(/\s+/g, '-')]?.title || "Untitled")
- .style("opacity", 0)
- .style("pointer-events", "none")
- .call(drag(simulation));
-
- // set panning
-
- if (enableZoom) {
- svg.call(d3.zoom()
- .extent([[0, 0], [width, height]])
- .scaleExtent([0.25, 4])
- .on("zoom", ({transform}) => {
- link.attr("transform", transform);
- node.attr("transform", transform);
- labels.attr("transform", transform);
- }));
- }
-
- // progress the simulation
- simulation.on("tick", () => {
- link
- .attr("x1", d => d.source.x)
- .attr("y1", d => d.source.y)
- .attr("x2", d => d.target.x)
- .attr("y2", d => d.target.y)
- node
- .attr("cx", d => d.x)
- .attr("cy", d => d.y)
- labels
- .attr("x", d => d.x)
- .attr("y", d => d.y)
- });
+ } else {
+ parseIdsFromLinks(copyLinks).forEach((id) => neighbours.add(id))
}
-
\ No newline at end of file
+
+ const data = {
+ nodes: [...neighbours].map((id) => ({ id })),
+ links: copyLinks.filter((l) => neighbours.has(l.source) && neighbours.has(l.target)),
+ }
+
+ const color = (d) => {
+ if (d.id === curPage || (d.id === "/" && curPage === "")) {
+ return "var(--g-node-active)"
+ }
+
+ for (const pathColor of pathColors) {
+ const path = Object.keys(pathColor)[0]
+ const colour = pathColor[path]
+ if (d.id.startsWith(path)) {
+ return colour
+ }
+ }
+
+ return "var(--g-node)"
+ }
+
+ const drag = (simulation) => {
+ function dragstarted(event, d) {
+ if (!event.active) simulation.alphaTarget(1).restart()
+ d.fx = d.x
+ d.fy = d.y
+ }
+
+ function dragged(event, d) {
+ d.fx = event.x
+ d.fy = event.y
+ }
+
+ function dragended(event, d) {
+ if (!event.active) simulation.alphaTarget(0)
+ d.fx = null
+ d.fy = null
+ }
+
+ const noop = () => {}
+ return d3
+ .drag()
+ .on("start", enableDrag ? dragstarted : noop)
+ .on("drag", enableDrag ? dragged : noop)
+ .on("end", enableDrag ? dragended : noop)
+ }
+
+ const height = Math.max(container.offsetHeight, isHome ? 500 : 250)
+ const width = container.offsetWidth
+
+ const simulation = d3
+ .forceSimulation(data.nodes)
+ .force("charge", d3.forceManyBody().strength(-100 * repelForce))
+ .force(
+ "link",
+ d3
+ .forceLink(data.links)
+ .id((d) => d.id)
+ .distance(40),
+ )
+ .force("center", d3.forceCenter())
+
+ const svg = d3
+ .select("#graph-container")
+ .append("svg")
+ .attr("width", width)
+ .attr("height", height)
+ .attr('viewBox', [-width / 2 * 1 / scale, -height / 2 * 1 / scale, width * 1 / scale, height * 1 / scale])
+
+ if (enableLegend) {
+ const legend = [{ Current: "var(--g-node-active)" }, { Note: "var(--g-node)" }, ...pathColors]
+ legend.forEach((legendEntry, i) => {
+ const key = Object.keys(legendEntry)[0]
+ const colour = legendEntry[key]
+ svg
+ .append("circle")
+ .attr("cx", -width / 2 + 20)
+ .attr("cy", height / 2 - 30 * (i + 1))
+ .attr("r", 6)
+ .style("fill", colour)
+ svg
+ .append("text")
+ .attr("x", -width / 2 + 40)
+ .attr("y", height / 2 - 30 * (i + 1))
+ .text(key)
+ .style("font-size", "15px")
+ .attr("alignment-baseline", "middle")
+ })
+ }
+
+ // draw links between nodes
+ const link = svg
+ .append("g")
+ .selectAll("line")
+ .data(data.links)
+ .join("line")
+ .attr("class", "link")
+ .attr("stroke", "var(--g-link)")
+ .attr("stroke-width", 2)
+ .attr("data-source", (d) => d.source.id)
+ .attr("data-target", (d) => d.target.id)
+
+ // svg groups
+ const graphNode = svg.append("g").selectAll("g").data(data.nodes).enter().append("g")
+
+ // calculate radius
+ const nodeRadius = (d) => {
+ const numOut = index.links[d.id]?.length || 0
+ const numIn = index.backlinks[d.id]?.length || 0
+ return 3 + (numOut + numIn) / 4
+ }
+
+ // draw individual nodes
+ const node = graphNode
+ .append("circle")
+ .attr("class", "node")
+ .attr("id", (d) => d.id)
+ .attr("r", nodeRadius)
+ .attr("fill", color)
+ .style("cursor", "pointer")
+ .on("click", (_, d) => {
+ // SPA navigation
+ window.Million.navigate(new URL(`${baseUrl}${decodeURI(d.id).replace(/\s+/g, "-")}/`), ".singlePage")
+ })
+ .on("mouseover", function (_, d) {
+ d3.selectAll(".node").transition().duration(100).attr("fill", "var(--g-node-inactive)")
+
+ const neighbours = parseIdsFromLinks([
+ ...(index.links[d.id] || []),
+ ...(index.backlinks[d.id] || []),
+ ])
+ const neighbourNodes = d3.selectAll(".node").filter((d) => neighbours.includes(d.id))
+ const currentId = d.id
+ window.Million.prefetch(new URL(`${baseUrl}${decodeURI(d.id).replace(/\s+/g, "-")}/`))
+ const linkNodes = d3
+ .selectAll(".link")
+ .filter((d) => d.source.id === currentId || d.target.id === currentId)
+
+ // highlight neighbour nodes
+ neighbourNodes.transition().duration(200).attr("fill", color)
+
+ // highlight links
+ linkNodes.transition().duration(200).attr("stroke", "var(--g-link-active)")
+
+ const bigFont = fontSize*1.5
+
+ // show text for self
+ d3.select(this.parentNode)
+ .raise()
+ .select("text")
+ .transition()
+ .duration(200)
+ .attr('opacityOld', d3.select(this.parentNode).select('text').style("opacity"))
+ .style('opacity', 1)
+ .style('font-size', bigFont+'em')
+ .attr('dy', d => nodeRadius(d) + 20 + 'px') // radius is in px
+ })
+ .on("mouseleave", function (_, d) {
+ d3.selectAll(".node").transition().duration(200).attr("fill", color)
+
+ const currentId = d.id
+ const linkNodes = d3
+ .selectAll(".link")
+ .filter((d) => d.source.id === currentId || d.target.id === currentId)
+
+ linkNodes.transition().duration(200).attr("stroke", "var(--g-link)")
+
+ d3.select(this.parentNode)
+ .select("text")
+ .transition()
+ .duration(200)
+ .style('opacity', d3.select(this.parentNode).select('text').attr("opacityOld"))
+ .style('font-size', fontSize+'em')
+ .attr('dy', d => nodeRadius(d) + 8 + 'px') // radius is in px
+ })
+ .call(drag(simulation))
+
+ // draw labels
+ const labels = graphNode
+ .append("text")
+ .attr("dx", 0)
+ .attr("dy", (d) => nodeRadius(d) + 8 + "px")
+ .attr("text-anchor", "middle")
+ .text((d) => content[d.id]?.title || d.id.replace("-", " "))
+ .style('opacity', (opacityScale - 1) / 3.75)
+ .style("pointer-events", "none")
+ .style('font-size', fontSize+'em')
+ .raise()
+ .call(drag(simulation))
+
+ // set panning
+
+ if (enableZoom) {
+ svg.call(
+ d3
+ .zoom()
+ .extent([
+ [0, 0],
+ [width, height],
+ ])
+ .scaleExtent([0.25, 4])
+ .on("zoom", ({ transform }) => {
+ link.attr("transform", transform)
+ node.attr("transform", transform)
+ const scale = transform.k * opacityScale;
+ const scaledOpacity = Math.max((scale - 1) / 3.75, 0)
+ labels.attr("transform", transform).style("opacity", scaledOpacity)
+ }),
+ )
+ }
+
+ // progress the simulation
+ simulation.on("tick", () => {
+ link
+ .attr("x1", (d) => d.source.x)
+ .attr("y1", (d) => d.source.y)
+ .attr("x2", (d) => d.target.x)
+ .attr("y2", (d) => d.target.y)
+ node.attr("cx", (d) => d.x).attr("cy", (d) => d.y)
+ labels.attr("x", (d) => d.x).attr("y", (d) => d.y)
+ })
+}
--
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